1 /*
2  * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 package sun.jvm.hotspot.utilities.soql;
25 
26 import java.util.Map;
27 import java.util.HashMap;
28 import java.util.Collections;
29 import java.lang.reflect.Method;
30 import java.lang.reflect.Constructor;
31 import javax.script.Invocable;
32 
33 /**
34  * Simple implementation of ScriptObject interface
35  * with property storage backed by a Map. This class
36  * can be extended to override any of the methods, in
37  * particular to add "function" valued properties.
38  */
39 public class MapScriptObject implements ScriptObject {
40   // map to store the properties
41   private Map map;
42 
MapScriptObject()43   public MapScriptObject() {
44     this(new HashMap());
45   }
46 
MapScriptObject(Map map)47   public MapScriptObject(Map map) {
48     // make it synchronized
49     this.map = Collections.synchronizedMap(map);
50   }
51 
getIds()52   public Object[] getIds() {
53     return map.keySet().toArray();
54   }
55 
get(String name)56   public Object get(String name) {
57     if (has(name)) {
58       return map.get(name);
59     } else {
60       return UNDEFINED;
61     }
62   }
63 
get(int index)64   public Object get(int index) {
65     if (has(index)) {
66       Object key = Integer.valueOf(index);
67       return map.get(key);
68     } else {
69       return UNDEFINED;
70     }
71   }
72 
put(String name, Object value)73   public void put(String name, Object value) {
74     map.put(name, value);
75   }
76 
put(int index, Object value)77   public void put(int index, Object value) {
78     map.put(Integer.valueOf(index), value);
79   }
80 
has(String name)81   public boolean has(String name) {
82     return map.containsKey(name);
83   }
84 
has(int index)85   public boolean has(int index) {
86     return map.containsKey(Integer.valueOf(index));
87   }
88 
delete(String name)89   public boolean delete(String name) {
90     if (map.containsKey(name)) {
91       map.remove(name);
92       return true;
93     } else {
94       return false;
95     }
96   }
97 
delete(int index)98   public boolean delete(int index) {
99     Object key = Integer.valueOf(index);
100     if (map.containsKey(key)) {
101       map.remove(key);
102       return true;
103     } else {
104       return false;
105     }
106   }
107 
108   // add a function valued property that invokes given Method
putFunction(Object target, Method method)109   protected void putFunction(Object target, Method method) {
110     putFunction(target, method, true);
111   }
112 
113   // add a function valued property that invokes given Method
putFunction(Object target, Method method, boolean wrapArgs)114   protected void putFunction(Object target, Method method, boolean wrapArgs) {
115     map.put(method.getName(), new MethodCallable(target, method, wrapArgs));
116   }
117 
118   // add a function valued property that invokes given script function
putFunction(Object target, String name, Invocable invocable)119   protected void putFunction(Object target, String name, Invocable invocable) {
120     map.put(name, new InvocableCallable(target, name, invocable));
121   }
122 }
123